cfalls- cam only ls1 = 400rwhp most cam only lt1= 350rwhp.
i just prefer almost everything about the ls1...MUCH better gas mileage, sounds better, the lt1 does have more low end torque though. the optispark is a big reason why i'll never buy another one...every one ive had i had to do the opti on it, and some more than once.
if joe is sellin his @ an lt1 price lol id jump on that for sure!!